package com.mr_ladeng.videoplayerdemo;

import java.io.IOException;

import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;
import android.net.Uri;
import android.util.AttributeSet;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.MediaController;
import android.widget.MediaController.MediaPlayerControl;

/**
 * Displays a video file. The VideoView class can load images from various
 * sources (such as resources or content providers), takes care of computing its
 * measurement from the video so that it can be used in any layout manager, and
 * provides various display options such as scaling and tinting.
 */
public class VideoPlayView extends SurfaceView implements MediaPlayerControl {
	private String TAG = "VideoView";

	private Context mContext;

	private Uri mUri;// 播放地址
	private int mDuration;

	// All the stuff we need for playing and showing a video
	private SurfaceHolder mSurfaceHolder = null;
	private MediaPlayer mMediaPlayer = null;
	private boolean mIsPrepared;
	private int mVideoWidth;
	private int mVideoHeight;
	private int mSurfaceWidth;
	private int mSurfaceHeight;
	private MediaController mMediaController;
	private OnCompletionListener mOnCompletionListener;
	private MediaPlayer.OnPreparedListener mOnPreparedListener;
	private int mCurrentBufferPercentage;
	private OnErrorListener mOnErrorListener;
	private boolean mStartWhenPrepared;
	private int mSeekWhenPrepared;

	private MySizeChangeLinstener mMyChangeLinstener;

	public int getVideoWidth() {
		return mVideoWidth;
	}

	public int getVideoHeight() {
		return mVideoHeight;
	}

	public void setVideoScale(int width, int height) {
		LayoutParams lp = getLayoutParams();
		lp.height = height;
		lp.width = width;
		setLayoutParams(lp);
	}

	public interface MySizeChangeLinstener {
		public void doMyThings();
	}

	public void setMySizeChangeLinstener(MySizeChangeLinstener l) {
		mMyChangeLinstener = l;
	}

	public VideoPlayView(Context context) {
		super(context);
		mContext = context;
		initVideoView();
	}

	public VideoPlayView(Context context, AttributeSet attrs) {
		this(context, attrs, 0);
		mContext = context;
		initVideoView();
	}

	public VideoPlayView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		mContext = context;
		initVideoView();
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		// Log.i("@@@@", "onMeasure");
		int width = getDefaultSize(mVideoWidth, widthMeasureSpec);
		int height = getDefaultSize(mVideoHeight, heightMeasureSpec);
		/*
		 * if (mVideoWidth > 0 && mVideoHeight > 0) { if ( mVideoWidth * height
		 * > width * mVideoHeight ) { //Log.i("@@@",
		 * "image too tall, correcting"); height = width * mVideoHeight /
		 * mVideoWidth; } else if ( mVideoWidth * height < width * mVideoHeight
		 * ) { //Log.i("@@@", "image too wide, correcting"); width = height *
		 * mVideoWidth / mVideoHeight; } else { //Log.i("@@@",
		 * "aspect ratio is correct: " + //width+"/"+height+"="+
		 * //mVideoWidth+"/"+mVideoHeight); } }
		 */
		// Log.i("@@@@@@@@@@", "setting size: " + width + 'x' + height);
		setMeasuredDimension(width, height);
	}

	public int resolveAdjustedSize(int desiredSize, int measureSpec) {
		int result = desiredSize;
		int specMode = MeasureSpec.getMode(measureSpec);
		int specSize = MeasureSpec.getSize(measureSpec);

		switch (specMode) {
		case MeasureSpec.UNSPECIFIED:
			/*
			 * Parent says we can be as big as we want. Just don't be larger
			 * than max size imposed on ourselves.
			 */
			result = desiredSize;
			break;

		case MeasureSpec.AT_MOST:
			/*
			 * Parent says we can be as big as we want, up to specSize. Don't be
			 * larger than specSize, and don't be larger than the max size
			 * imposed on ourselves.
			 */
			result = Math.min(desiredSize, specSize);
			break;

		case MeasureSpec.EXACTLY:
			// No choice. Do what we are told.
			result = specSize;
			break;
		}
		return result;
	}

	private void initVideoView() {
		mVideoWidth = 0;
		mVideoHeight = 0;
		getHolder().addCallback(mSHCallback);
		getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
		setFocusable(true);
		setFocusableInTouchMode(true);
		requestFocus();
	}

	public void setVideoPath(String path) {
		setVideoURI(path);
	}

	public void setVideoURI(String uri) {

		mUri = Uri.parse(uri);

		mStartWhenPrepared = false;
		mSeekWhenPrepared = 0;
		openVideo();
		requestLayout();
		invalidate();
	}

	public void stopPlayback() {
		if (mMediaPlayer != null) {
			mMediaPlayer.stop();
			mMediaPlayer.release();
			mMediaPlayer = null;
		}
	}

	private void openVideo() {
		if (mUri == null || mSurfaceHolder == null) {
			// not ready for playback just yet, will try again later
			return;
		}
		// Tell the music playback service to pause
		// TODO: these constants need to be published somewhere in the
		// framework.
		Intent i = new Intent("com.android.music.musicservicecommand");
		i.putExtra("command", "pause");
		mContext.sendBroadcast(i);

		if (mMediaPlayer != null) {
			mMediaPlayer.reset();
			mMediaPlayer.release();
			mMediaPlayer = null;
		}

		try {

			mMediaPlayer = new MediaPlayer();
			// /* 重置MediaPlayer */
			// mMediaPlayer.reset();

			mMediaPlayer.setOnPreparedListener(mPreparedListener);
			mMediaPlayer.setOnVideoSizeChangedListener(mSizeChangedListener);
			mIsPrepared = false;
			Log.v(TAG, "reset duration to -1 in openVideo");
			mDuration = -1;
			mMediaPlayer.setOnCompletionListener(mCompletionListener);
			mMediaPlayer.setOnErrorListener(mErrorListener);
			mMediaPlayer.setOnBufferingUpdateListener(mBufferingUpdateListener);
			mCurrentBufferPercentage = 0;
			mMediaPlayer.setDataSource(mContext, mUri);

			mMediaPlayer.setDisplay(mSurfaceHolder);
			mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
			mMediaPlayer.setScreenOnWhilePlaying(true);
			mMediaPlayer.prepareAsync();
			attachMediaController();
		} catch (IOException ex) {
			Log.w(TAG, "Unable to open content: " + mUri, ex);
			return;
		} catch (IllegalArgumentException ex) {
			Log.w(TAG, "Unable to open content: " + mUri, ex);
			return;
		}
	}

	public void setMediaController(MediaController controller) {
		if (mMediaController != null) {
			mMediaController.hide();
		}
		mMediaController = controller;
		attachMediaController();
	}

	private void attachMediaController() {
		if (mMediaPlayer != null && mMediaController != null) {
			mMediaController.setMediaPlayer(this);
			View anchorView = this.getParent() instanceof View ? (View) this.getParent() : this;
			mMediaController.setAnchorView(anchorView);
			mMediaController.setEnabled(mIsPrepared);
		}
	}

	MediaPlayer.OnVideoSizeChangedListener mSizeChangedListener = new MediaPlayer.OnVideoSizeChangedListener() {
		public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
			mVideoWidth = mp.getVideoWidth();
			mVideoHeight = mp.getVideoHeight();

			if (mMyChangeLinstener != null) {
				mMyChangeLinstener.doMyThings();
			}

			if (mVideoWidth != 0 && mVideoHeight != 0) {
				getHolder().setFixedSize(mVideoWidth, mVideoHeight);
			}
		}
	};

	MediaPlayer.OnPreparedListener mPreparedListener = new MediaPlayer.OnPreparedListener() {
		
		public void onPrepared(MediaPlayer mp) {

			// briefly show the mediacontroller
			mIsPrepared = true;
			if (mOnPreparedListener != null) {
				mOnPreparedListener.onPrepared(mMediaPlayer);
			}

			if (mMediaController != null) {
				mMediaController.setEnabled(true);
			}
			mVideoWidth = mp.getVideoWidth();
			mVideoHeight = mp.getVideoHeight();
			if (mVideoWidth != 0 && mVideoHeight != 0) {
				// Log.i("@@@@", "video size: " + mVideoWidth +"/"+
				// mVideoHeight);
				getHolder().setFixedSize(mVideoWidth, mVideoHeight);
				if (mSurfaceWidth == mVideoWidth && mSurfaceHeight == mVideoHeight) {
					// We didn't actually change the size (it was already at the
					// size
					// we need), so we won't get a "surface changed" callback,
					// so
					// start the video here instead of in the callback.
					if (mSeekWhenPrepared != 0) {
						mMediaPlayer.seekTo(mSeekWhenPrepared);
						mSeekWhenPrepared = 0;
					}
					if (mStartWhenPrepared) {
						mMediaPlayer.start();
						mStartWhenPrepared = false;
						if (mMediaController != null) {
							mMediaController.show();
						}
					} else if (!isPlaying() && (mSeekWhenPrepared != 0 || getCurrentPosition() > 0)) {
						if (mMediaController != null) {
							// Show the media controls when we're paused into a
							// video and make 'em stick.
							mMediaController.show(0);
						}
					}
				}
			} else {
				// We don't know the video size yet, but should start anyway.
				// The video size might be reported to us later.
				if (mSeekWhenPrepared != 0) {
					mMediaPlayer.seekTo(mSeekWhenPrepared);
					mSeekWhenPrepared = 0;
				}
				if (mStartWhenPrepared) {
					mMediaPlayer.start();
					mStartWhenPrepared = false;
				}
			}
			// System.out.println("加载完成");
			if (!(String.valueOf(mUri).startsWith("http"))) {
				System.out.println("本地播放:" + String.valueOf(mUri));
				// HashMap<String, Object> vHashMap = Dao.getEncryKey(videoUrl);
				// if(vHashMap.size()==0)
				// {
				// FileEnDecryptManager.encryption(String.valueOf(mUri),videoUrl,videoName);
				// }
			} else {
				System.out.println("网络播放:" + String.valueOf(mUri));
			}
		}
	};

	private MediaPlayer.OnCompletionListener mCompletionListener = new MediaPlayer.OnCompletionListener() {
		public void onCompletion(MediaPlayer mp) {
			if (mMediaController != null) {
				mMediaController.hide();
			}
			if (mOnCompletionListener != null) {
				mOnCompletionListener.onCompletion(mMediaPlayer);
			}
		}
	};

	private MediaPlayer.OnErrorListener mErrorListener = new MediaPlayer.OnErrorListener() {
		public boolean onError(MediaPlayer mp, int framework_err, int impl_err) {
			Log.d(TAG, "Error: " + framework_err + "," + impl_err);
			if (mMediaController != null) {
				mMediaController.hide();
			}

			/* If an error handler has been supplied, use it and finish. */
			if (mOnErrorListener != null) {
				if (mOnErrorListener.onError(mMediaPlayer, framework_err, impl_err)) {
					return true;
				}
			}

			/*
			 * Otherwise, pop up an error dialog so the user knows that
			 * something bad has happened. Only try and pop up the dialog if
			 * we're attached to a window. When we're going away and no longer
			 * have a window, don't bother showing the user an error.
			 */
			if (getWindowToken() != null) {
				Resources r = mContext.getResources();
				int messageId;

				/*
				 * if (framework_err ==
				 * MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK) {
				 * messageId = com.android.internal.R.string.
				 * VideoView_error_text_invalid_progressive_playback; } else {
				 * messageId =
				 * com.android.internal.R.string.VideoView_error_text_unknown; }
				 * 
				 * new AlertDialog.Builder(mContext)
				 * .setTitle(com.android.internal
				 * .R.string.VideoView_error_title) .setMessage(messageId)
				 * .setPositiveButton
				 * (com.android.internal.R.string.VideoView_error_button, new
				 * DialogInterface.OnClickListener() { public void
				 * onClick(DialogInterface dialog, int whichButton) { If we get
				 * here, there is no onError listener, so at least inform them
				 * that the video is over.
				 * 
				 * if (mOnCompletionListener != null) {
				 * mOnCompletionListener.onCompletion(mMediaPlayer); } } })
				 * .setCancelable(false) .show();
				 */
			}
			return true;
		}
	};

	private MediaPlayer.OnBufferingUpdateListener mBufferingUpdateListener = new MediaPlayer.OnBufferingUpdateListener() {
		public void onBufferingUpdate(MediaPlayer mp, int percent) {
			mCurrentBufferPercentage = percent;
		}
	};

	/**
	 * Register a callback to be invoked when the media file is loaded and ready
	 * to go.
	 * 
	 * @param l
	 *            The callback that will be run
	 */
	public void setOnPreparedListener(MediaPlayer.OnPreparedListener l) {
		mOnPreparedListener = l;
	}

	/**
	 * Register a callback to be invoked when the end of a media file has been
	 * reached during playback.
	 * 
	 * @param l
	 *            The callback that will be run
	 */
	public void setOnCompletionListener(OnCompletionListener l) {
		mOnCompletionListener = l;
	}

	/**
	 * Register a callback to be invoked when an error occurs during playback or
	 * setup. If no listener is specified, or if the listener returned false,
	 * VideoView will inform the user of any errors.
	 * 
	 * @param l
	 *            The callback that will be run
	 */
	public void setOnErrorListener(OnErrorListener l) {
		mOnErrorListener = l;
	}

	SurfaceHolder.Callback mSHCallback = new SurfaceHolder.Callback() {
		public void surfaceChanged(SurfaceHolder holder, int format, int w,int h) {
			mSurfaceWidth = w;
			mSurfaceHeight = h;
			if (mMediaPlayer != null && mIsPrepared && mVideoWidth == w && mVideoHeight == h) {
				if (mSeekWhenPrepared != 0) {
					mMediaPlayer.seekTo(mSeekWhenPrepared);
					mSeekWhenPrepared = 0;
				}

				mMediaPlayer.start();
				if (mMediaController != null) {
					mMediaController.show();
				}
			}
		}

		public void surfaceCreated(SurfaceHolder holder) {
			mSurfaceHolder = holder;
			openVideo();
		}

		public void surfaceDestroyed(SurfaceHolder holder) {
			// after we return from this we can't use the surface any more
			mSurfaceHolder = null;
			if (mMediaController != null) {
				mMediaController.hide();
			}

			if (mMediaPlayer != null) {
				mMediaPlayer.reset();
				mMediaPlayer.release();
				mMediaPlayer = null;
			}
		}
	};

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		if (mIsPrepared && mMediaPlayer != null && mMediaController != null) {
			toggleMediaControlsVisiblity();
		}
		return false;
	}

	@Override
	public boolean onTrackballEvent(MotionEvent ev) {
		if (mIsPrepared && mMediaPlayer != null && mMediaController != null) {
			toggleMediaControlsVisiblity();
		}

		return false;
	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		if (mIsPrepared && keyCode != KeyEvent.KEYCODE_BACK
				&& keyCode != KeyEvent.KEYCODE_VOLUME_UP
				&& keyCode != KeyEvent.KEYCODE_VOLUME_DOWN
				&& keyCode != KeyEvent.KEYCODE_MENU
				&& keyCode != KeyEvent.KEYCODE_CALL
				&& keyCode != KeyEvent.KEYCODE_ENDCALL && mMediaPlayer != null
				&& mMediaController != null) {
			if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) {
				if (mMediaPlayer.isPlaying()) {
					pause();
					mMediaController.show();
				} else {
					start();
					mMediaController.hide();
				}
				return true;
			} else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
					&& mMediaPlayer.isPlaying()) {
				pause();
				mMediaController.show();
			} else {
				toggleMediaControlsVisiblity();
			}
		}

		return super.onKeyDown(keyCode, event);
	}

	private void toggleMediaControlsVisiblity() {
		if (mMediaController.isShowing()) {
			mMediaController.hide();
		} else {
			mMediaController.show();
		}
	}

	public void start() {
		if (mMediaPlayer != null && mIsPrepared) {
			// try
			// {
			// mMediaPlayer.prepare();可以解决代码38错误问题
			// } catch (IllegalStateException e)
			// {
			// e.printStackTrace();
			// } catch (IOException e)
			// {
			// e.printStackTrace();
			// }
			mMediaPlayer.start();
			mStartWhenPrepared = false;
		} else {
			mStartWhenPrepared = true;
		}
	}

	public void pause() {
		if (mMediaPlayer != null && mIsPrepared) {
			if (mMediaPlayer.isPlaying()) {
				mMediaPlayer.pause();
			}
		}
		mStartWhenPrepared = false;
	}

	public int getDuration() {
		if (mMediaPlayer != null && mIsPrepared) {
			if (mDuration > 0) {
				return mDuration;
			}
			mDuration = mMediaPlayer.getDuration();
			return mDuration;
		}
		mDuration = -1;
		return mDuration;
	}

	public int getCurrentPosition() {
		if (mMediaPlayer != null && mIsPrepared) {
			return mMediaPlayer.getCurrentPosition();
		}
		return 0;
	}

	public void seekTo(int msec) {
		if (mMediaPlayer != null && mIsPrepared) {
			mMediaPlayer.seekTo(msec);
		} else {
			mSeekWhenPrepared = msec;
		}
	}

	public boolean isPlaying() {
		if (mMediaPlayer != null && mIsPrepared) {
			return mMediaPlayer.isPlaying();
		}
		return false;
	}

	public int getBufferPercentage() {
		if (mMediaPlayer != null) {
			return mCurrentBufferPercentage;
		}
		return 0;
	}

	// @Override
	public boolean canPause() {

		return false;
	}

	// @Override
	public boolean canSeekBackward() {

		return false;
	}

	// @Override
	public boolean canSeekForward() {

		return false;
	}

	@Override
	public int getAudioSessionId() {

		return 0;
	}

}
